There's probably not much in it - go for the one you like. The only
thing I'd say are that the batteries are a bit low capacity for the
impact driver on both of them, so the faster charging on the mak may
be an advantage.

Oh and buy these:

http://www.screwfix.com/app/sfd/cat/...47085&id=17228

being able to pop a socket on the front of the impact driver is
amazingly useful.